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/*
 * Copyright (C) 2008-2017, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.juick.service;

import org.apache.commons.lang3.StringUtils;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

import javax.inject.Inject;
import java.util.List;

/**
 * Created by vitalyster on 09.12.2016.
 */
@Repository
@Transactional
public class EmailServiceImpl extends BaseJdbcService implements EmailService {

    @Override
    public boolean verifyAddressByCode(Integer userId, String code) {
        try {
            String address = getJdbcTemplate().queryForObject("SELECT account FROM auth WHERE user_id=? AND protocol='email' AND authcode=?",
                    String.class, userId, code);
            addEmail(userId, address);
            getJdbcTemplate().update("DELETE FROM auth WHERE user_id=? AND authcode=?", userId, code);
        } catch (EmptyResultDataAccessException e) {
            return false;
        }
        return true;
    }

    @Override
    public boolean addVerificationCode(Integer userId, String account, String code) {
        return getJdbcTemplate().update("INSERT INTO auth(user_id,protocol,account,authcode) VALUES (?,'email',?,?)",
                userId, account, code) > 0;
    }

    @Override
    public boolean addEmail(Integer userId, String email) {
        return getJdbcTemplate().update("INSERT INTO emails(user_id,email, subscr_hour) VALUES (?,?, 1)", userId, email) > 0;
    }

    @Override
    public boolean deleteEmail(Integer userId, String account) {
        return getNamedParameterJdbcTemplate().update("DELETE FROM emails " +
                        "WHERE (SELECT COUNT(*) cnt FROM (select user_id, email FROM emails e) c WHERE user_id=:uid) > 1 " +
                        "AND user_id=:uid AND email=:email",
                new MapSqlParameterSource()
                        .addValue("uid", userId)
                        .addValue("email", account)) > 0;
    }

    @Transactional(readOnly = true)
    @Override
    public String getNotificationsEmail(Integer userId) {
        List<String> list = getJdbcTemplate().queryForList(
                "SELECT email FROM emails WHERE user_id=? AND subscr_hour IS NOT NULL", String.class, userId);
        return list.isEmpty() ? StringUtils.EMPTY : list.get(0);
    }

    @Override
    public boolean setNotificationsEmail(Integer userId, String account) {
        getJdbcTemplate().update("UPDATE emails SET subscr_hour=NULL WHERE user_id=?", userId);
        return StringUtils.isNotEmpty(account) && getJdbcTemplate().update(
                "UPDATE emails SET subscr_hour=1 WHERE user_id=? AND email=?", userId, account) > 0;
    }

    @Transactional(readOnly = true)
    @Override
    public List<String> getEmails(Integer userId, boolean active) {
        return getJdbcTemplate().queryForList("SELECT email FROM emails WHERE user_id=? " +
                (active ? "AND subscr_hour IS NOT NULL" : ""), String.class, userId);
    }
    @Transactional(readOnly = true)
    @Override
    public String getEmailByAuthCode(String code) {
        try {
            return getJdbcTemplate().queryForObject("SELECT account FROM auth WHERE protocol='email' AND authcode=?", String.class, code);
        } catch (EmptyResultDataAccessException e) {
            return StringUtils.EMPTY;
        }
    }

    @Transactional
    @Override
    public void deleteAuthCode(String code) {
        getJdbcTemplate().update("DELETE FROM auth WHERE authcode=?", code);
    }

}